Yi Kong | 878f994 | 2023-12-13 12:55:04 +0900 | [diff] [blame^] | 1 | // -*- C++ -*- |
| 2 | //===----------------------------------------------------------------------===// |
| 3 | // |
| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 5 | // See https://llvm.org/LICENSE.txt for license information. |
| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef _LIBCPP___CHRONO_STEADY_CLOCK_H |
| 11 | #define _LIBCPP___CHRONO_STEADY_CLOCK_H |
| 12 | |
| 13 | #include <__chrono/duration.h> |
| 14 | #include <__chrono/time_point.h> |
| 15 | #include <__config> |
| 16 | |
| 17 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 18 | # pragma GCC system_header |
| 19 | #endif |
| 20 | |
| 21 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 22 | |
| 23 | namespace chrono |
| 24 | { |
| 25 | |
| 26 | #ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK |
| 27 | class _LIBCPP_EXPORTED_FROM_ABI steady_clock |
| 28 | { |
| 29 | public: |
| 30 | typedef nanoseconds duration; |
| 31 | typedef duration::rep rep; |
| 32 | typedef duration::period period; |
| 33 | typedef chrono::time_point<steady_clock, duration> time_point; |
| 34 | static _LIBCPP_CONSTEXPR_SINCE_CXX14 const bool is_steady = true; |
| 35 | |
| 36 | static time_point now() _NOEXCEPT; |
| 37 | }; |
| 38 | #endif |
| 39 | |
| 40 | } // namespace chrono |
| 41 | |
| 42 | _LIBCPP_END_NAMESPACE_STD |
| 43 | |
| 44 | #endif // _LIBCPP___CHRONO_STEADY_CLOCK_H |